style: 统一下拉与加载指示器

test/notice/notices_page_test.dart

@@ -24,9 +24,10 @@ void main() {
     await _pump(tester, repository);
 
     expect(find.text('Notice 1'), findsOneWidget);
-    expect(find.byKey(const Key('notices-load-more')), findsOneWidget);
-
-    await tester.tap(find.byKey(const Key('notices-load-more')));
+    await tester.drag(
+      find.byKey(const Key('notices-list')),
+      const Offset(0, -300),
+    );
     await tester.pumpAndSettle();
 
     expect(find.text('Notice 3'), findsOneWidget);